Add imported surface alignment check
Add imported surface alignment check

This fixes issues #62
https://github.com/01org/intel-vaapi-driver/issues/62

Signed-off-by: Wang Tiantian <c229762f16c1a908acee3aa611dae757dbc1dee7@intel.com>
Reviewed-by: Zhao Yakui <21bae65ecea50a19bd9d0fef489914760189fd5b@intel.com>
(cherry picked from commit 43a75eaadf2c5226654be438e0223a28f577d27a)

01org/iotg-lin-gfx-va-driver,01org/iotg-lin-gfx-va-driver,01org/iotg-lin-gfx-va-driver,01org/iotg-lin-gfx-va-driver,01org/iotg-lin-gfx-va-driver